diff --git a/src/z2ui5_cl_xml_view.clas.abap b/src/z2ui5_cl_xml_view.clas.abap
index 20990ecc..48027c4b 100644
--- a/src/z2ui5_cl_xml_view.clas.abap
+++ b/src/z2ui5_cl_xml_view.clas.abap
@@ -893,9 +893,9 @@ public section.
   methods TREE_TABLE
     importing
       !ROWS type CLIKE
-      !SELECTIONMODE type STRINGVAL default 'Single'
-      !ENABLECOLUMNREORDERING type STRINGVAL default 'false'
-      !EXPANDFIRSTLEVEL type STRINGVAL default 'false'
+      !SELECTIONMODE type clike default 'Single'
+      !ENABLECOLUMNREORDERING type clike default 'false'
+      !EXPANDFIRSTLEVEL type clike default 'false'
     returning
       value(RESULT) type ref to Z2UI5_CL_XML_VIEW .
   methods TREE_COLUMNS